113 逆音響解析によるエンジン音源モデルの構築と防音構造への適用(OS4 機械の振動・騒音および制御に関する新技術(2),研究討論セッション)
詳細
Engine enclosures are one of the methods that reduce air borne noise from engine. It is effective to predict the sound pressure by numerical simulation, when we design the enclosure. However, accurate sound source model is needed for the numerical simulation. Inverse-numerical acoustic analysis (INA) has been proposed as a method of constructing sound source model. In this study, the sound source model of diesel engine was constructed using INA. In addition, using the sound source model and boundary element method, the surrounding noise of engine enclosure was predicted, and the effectiveness of sound source model was shown.
